John stevens



(No Model.)

J. STEVENS.

FIEEPROUF WINDOW SHUTTER. No. 514,515. Patented Feb. 13, 18947171237266563.- ya f @FVK/W UNITED STATES PATENT OFFICE.

JOHN STEVENS, OF MELBOURNE, VICTORIA.

FIREPROOF WINDOW-SHUTTER.

SPECIFICATION forming part of Letters Patent No. 514,515, dated February13, 1894.

Application filed March 8, 1893. Serial No. 465,087- (No model.)

To all whom it may concern.-

Be it known that 1, JOHN STEVENS, men chant, of Flinders Street,Melbourne, in the Oolonyof Victoria, a subject of the Queen of GreatBritain, have invented an Improved Fireproof Shutter for Window or otherSimilar Openings in Buildings, of which the f0llowing is aspecification.

It is the object of my invention to provide a cheap, simple andefiective shutter for inclosing a window or otheropeningin a build ingas a protection against the entrance, exit or spread of fire withoutimpairing said window as a means of ventilation, or light, and

, without affecting the view through the said window.

In the drawingsz Figure l is an exterior elevation of the shutter brokeninto sections so as to show the raw edges of the wire gauz 2o ing andits adjustment in the frame and cross-studs thereof; Fig. 2, a sectionalview of the cross or transverse studs, showing the wire gauzing clampedbetween said crossstnds and their inner plates by means of nuts 2 5 andbolts.

In the drawings A is the exterior plates of the frame, B the cross ortransverse bent rails, struts or bars to strengthen the frame A. O thebolts clamping such cross-rails and plates 0 between which the gauzing Eis set and secured. D the holes in the frame for reception of bolts 0.

It will be noticed by reference to Figs. 1

and 2 that the cross bars are bolted to each 5 other throughout theirextent as well as being bolted to their open frames and they thus notonly serve to confine or clamp the central part of the wire gauze,butthey serve also to clamp the open frames together.

In order that the wire gauze will be confined and sustained in properposition throughout its central portion the cross bars D are bent at theinner edges of the open frames so that their entire central portions lieclose together and against the opposite sides of the wire gauze and whenthey are bolted together, the wire gauze is securely held.

I claim- 1. In combination in afire proof shutter the independent frontand back open frames, the wire gauze having its edges clamped betweensaid frames and the independent cross bars B extending over the wiregauze and having their ends bolted to the open frames, said bars beingalso bolted to each other and thus serving to clamp the open framestogether as well as to brace them and confine the body of the wire gauzesubstantially as described.

2. In combination in a fireproof shutter, the independent front and backopen frames, the wire gauze clamped between them and the independentcross bars B, B, having their ends secured to the outer side of the openframes,and having theircentral portions bent inward toward each other atthe inner edges of the open frames to clamp the wire gauze between them,substantially as described.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

JOHN STEVENS.

Witnesses:

JONATHAN BEAR, 120 Queen Street, lllelbomme, Patent Agent.

JOHN FINNAMORE, Of some place, Clerk to said Jonathan Bear.

